(to, towards): The directional preposition nach is now used chiefly with geographical names that do not have an article with them: nach Ägypten, nach Hamburg, etc. Only in elevated, literary style are there remnants of a freer use of nach:

At times, this use of nach conveys the implication that the destination is not reached. Thus: Er fuhr zum Schloss. – “He travelled to the castle [and arrived there].” But: Er fuhr nach dem Schloss. – “He travelled towards the castle [and may or may not have arrived].”

Directional nach with personal names (or names of shops etc.) is found in the regional vernaculars of north-western Germany: nach Peter (“to Peter′s house”). This is nonstandard usage.

(like): There may be a slight semantic distinction between the use of nach and wie after a verb of sensual perception. The following phrases both translate to English as “This feels like silk”, but compare the different implications: Das fühlt sich nach Seide an. (“This feels like silk, and it probably is.”) Das fühlt sich an wie Seide. (“This feels like silk, although it’s probably something else.”) This distinction is not a strict one, however.